duckstine



J. DUCKST|NE. COMPUTING MACHINE.

APPLICATION FILED SEPT-$119M.

Patnted May 3,1921.

' 2 SHEETS-SHEET I.

I/III/II/IIIII/II IAVE T R )ATTORNENEY WITNESSES:

Patented May 3, 1.921

2 SPEETS-SHEET 2 Z v lNVENTOfi:

wrmmsts:

AUDREY,-

umrEn stages) ,15 {of accounts, such as bank accounts, and is PATENT OFFICE.

J'ULIUS DUCKSIHIE, 015 NEW YORK, 1%. Y., ASSIGNOR T0 UNDERWOOD CDMPUTL NG MACHINE COMZPANY, OF NEW YQRK, N. Y.,' A. CORPORATION 'OEN'EW YORK.

To all whom it my camera:

Be it known that I, JULIU-s Duons'rmn, a citizen of the United States, residing in New York, in the county of New' York and State of New York, have invented certain new and useful Improvements in Computing- Machines, of which the following is 'a specification. My invention relates to a combined typewriting and computing machine adapted to perform addition and subtraction and in which the totalizer is constructed to exhibit results of a negative value upon its dial wheels as we'll asresults of positive'valuc. My invention may be used in the keeping particularly adapted-to exhibit a credit balance preferably in red numerals and distinuished from a dhbit balance as exhibited m'black numeralsto show when a dcpositor has overdrawn his account; As herein disclosed the machine is provided with only one totalizer, but is adapted to be used with a plurality of totalizers, one for each depositor, in bank accounting, for example, or the machine may be provided with one or more totalizers for the purpose of business accounting to show correct credit and debit balances.

The totalizer of this machine is of a construction similar to the standard Vfahl totalizer as shown in patent to Wahl No.

1,148,733 and as disclosed herein is provided with an extra set of dial wheels to exhibit negative quantities and is also provided with a shutter mechanism whereby only one set of figures, either positive or negative, may be read at a time through one of two sight openings, pne for each set of'dial wheels. The totalizer is also provided with mecha nism to actuatesaid shutters when a greater number of positive value is subtracted from a number of lesser positive value or ,when a greater number of positive value is added to a number of lesser negative value.

In a machine of this type it is necessary when computatidn is being performed in any denomination higher than units, to perform tens-carrying from the dial wheel of highest denomination to the units dial wheel whenever the' dialwheel of highest denomination is rotated so that it moves from 9 to 0 as seen at the sight opening or vice versa. For this purpose there is connected to the dial wheel of highest denomination by suit- Spccification of Letters Patent.

Application filed September 6, 1916, Serial No. 118,676.

Patented May 3, 1921.

able gearing a back geai mechanism which is adapted to transmit motion from sa'd wheel of highest denomination, thro'ughit 1e intermediary of gearing, to the dial wheelof units denomination: i It is one of the objects of the present invention to provide a totalizer having two sets of dial wheels for representing numbers of difi'erent character, the wheels of both sets being controlled in commonhy asi-ngle set of computing wheels having tens-carrying for effecting tens-carrying operations fromv thecomputing wheel of highest denominational order to that of lowest, denominational order, means automatically effective.

to prevent'overthrow of the wheel of lowest denominational order at the end of such mechanism independent of either of said sets a carrying operation, and for maintaining a lock to prevent accidental displacement of that wheel, without adding resistance to the rotation of said wheel during a carry.

Another object of. the invention is to pro vide locking mechanism for the back gearing and "locking mechanism for the number wheel of lowest order, saidlockingflmechm I forthe' nisms being so'relatedthat the loo number'wheei'may be rendered ineffective, during a computin operation calling for a direct rotationof t at wheel, without interfering-with the effectiveness of the locking mechanism for the back earin Another objectrof the lnventlon is to provide a totalizer having a series of computing wheels, one for each denominational order,

and a series of transfer elements for effectmg tenscarrymg operations from each computing wheel of lower denominational order 7 gto the computing wheel of next higher denominational order, and from the computing wheel of highest denominational order to the computing wheel'of lowest denominational order, said transfer elements including automatic overthrow-preventing and locking means, and certain of Said transfer elements being movably mounted, so'that the element for eflecting a carry to thewheel of any denominational order, and which normally locks thesnm'e, may bemoved during a computing operation cailingior a direct rotation of the wheel of that orden Another object of the invention is to provide the shutters for the dial wheels with operating mechanism controlled by the computing wheel of highest denominational or- 5, der, and for locking the same against overthrow and accidental displacement without interfering with the rotation of said com puting,' wheel of highest denominational or- "1), der in either direction to the full capacity icy of the mechanism.

Other features and advantages i nafter a pear.

In the accompanying drawings;

' Figure 1 is a general sectional side view of ,lthe combined typewriting and computing machine. V

Fig. 2 is a fragmentary skeleton perspeertive view of the gearing employed to drive I the. units wheel from the wheel of highest denomination.

Fig. 3 is a development of the dial wheel peri heries showing the relative arrangemen of the red and black numerals.

F ig." 4 is a sectional view of the totalizer taken on the line 4 4 of Fig. 6.

Fig. 5 is a front view bf the totalizer with ig. 9 is a sectional view taken on the line 9-9 of Fig. 6 showing the portion of thegearing associated with the units dial wheel through which motion is transmitted thereto I from the dial wheel of highest denominat15 tion, the positions of the partsbeing such as to correspond to a positive value in the totalizer. s

Fig. 10 is a fragmentary top plan view of the master wheel and adjacent mecl-anism.

Numeral keys 11 and alphabet keys 12am depressed to swingke'y levers 1.3 to draw downwardly links 14 to swing bell-cranks 15 and draw forwardly links 16 to swing type bars 17 about their pivots 18 so that type 5.5 19 will be swung upwardly and rearwardly against a platen 20to print upon a work s eet wound around said-platen In order that the platen may be moved onele'tter space in letter feeding direction at 66 each depression of the keys .11 and i2.there is provided a universalbar Qluriderlying all of the key levers 13. which when depressed move said bar and therewith swings arock shaft '22 and an arm 23 fast thereto to pull {W on a link 24 connected at its upper endto an will hereis a' view similar to Fig. 7 showing arm 25 to actuate an escapement'dog 26 cooperating with escapement ratchet wheels 27 mounted 'on a shaft 28 journaled' in "the frame-work of the typewriter, and which has fast thereto at its forward end, a pinion 29 normally meshing with a rack 30 mounted on a typewriter carriage 31 to move one letter space from left toflright under the power of a spring-drum 31 connected to the typewriter carriage by a draw-band 31 at the actuation of said dog and escapement wheels. The typewriting mechanism herein described is common to typewriters of the Remington visible type. -Attached to the front of the typewriter frame is a computing mechanism 32 includ- 4 ing a master wheel 33 rotatable in either direction for addition and subtraction respectively, and is adapted to mesh with the gear wheels of a totalizer or computing head 34,

I on the dial wheels of the totalizer the result of the computation performed on the machine. For this purpose, each numeral key 11 has connected thereto an ufwardly extending link 35 (Fig.1) connec ed to swing a cam arm 36 at the depression of a numeral key and adapted to swing arms 37 fast on a rock shaft 38 journaled in the frame work of the computing mechanism, said rock shaft swinging therewith a gear segment 39 which, at said depression of a numeral key is adapted to swing a distance directly proportional to the digital value of the numeral key de n'essed in amanner illustrated and described in patent of John C. Wahl, No. 893.719.

It will be noted that the angular motion of all the arms 36 is equal, but that the associated arms 37 are arranged spirallyor differcntially so that the wrists 40 thereon will come in engagement with the arms 36 during the earlier or later part of the actuation of the latter at the depression of a numeral key so that a variable amount of motion will be transmitted to the segment 39 at the depression of the different numeral keys. It will also he noted by an inspection of Fig. 10, that the computing mechanism, 32 is provided with a state controlling handle adapted to operate a reversing gear to determine the direction of rotation of the master wheel 33 as in said patent to Wahl No. 1,148.7 33.

"In order to transmit the digital rotation of the master wheel or driving means 33 to the dial wheels of the totalizer 34, the latter is provided with computing wheels or inter-i mediate elements 50, one for each. domination and mplaced' on said totalizer as to be moved into mesh aerictm with the masor fo med t in adapted to, mesh;

t'er wheel, when the typewriter carriage is moved in a computing zone at each step of the letter feed movement of said carriage. In mesh with each computing wheel 50, 1s 5 anidle or intermediate pinion 51, meshing with a pinion 52 fast on a dial wheel 53; there being as many dial wheels or numeral wheels 53, as there are computing wheels 50. Each dial wheel 53 has the numerals 90, to .9 inclusive, arranged equidistantly on its periphery, one of which on each dial wheel is adapted to be visible at a sight opening 5a formed in the front wall 55 of the totalizer casing. The gearing of the computing wheel 50 and pinions 51 and 52, are so proportioned relative to the master wheel, as to cause a one digit \rotation of the dial wheel 53 for every one digitrotation of the master wheel 33. j

-As herein disclosed, when the' ,ate control handle is moved to adding position, F ig." 10, the gearing of the master wheel mechanlsm is so set as to rotate the master wheel in a counter-clockwise direction, as indicated by full line arrow in Fig. 4, and through the intermediary of the gears 50, .51 and p2 rotate the dial wheels 53 in clockwise directionso that the numerals thereon. will appear at the sight opening 54 in arithmetical progression. from 0 to 9 for every revolution of the dial Wheel to perform addition. I When it is desired to perform s'ubtrao tion, the handle 56 Fig. 10, is moved into engagement with the notch 57 marked for subtraction to so set the gearing of the master wheel mechanism 32 as'to cause a clockwise rotation of the master wheel 33, as indicated by the dotted arrow in Fig. 4,- at the actuation of the numeral keys 11 to rotate the'dial wheels .53 in counter-clockwise direction for subtraction.

Whenever the numeral 9 on the dial rwheel 53, passes the sight opening 54- inad- 40 :dition direction, or when the numeral 0 thereon passes said sight opening'in subtraction direction, it is desirable to rotate the dial wheel of next higher denomina- "tion one digits distance in the samedirec- '50 tion of rotation as that of said dial wheel on which said 9'or 0 :passed the sight opening, to perform what is commonly known as a carry-over action. For

' the purpose, each computing wheel is provided with a carry-over tooth 60 adapted to cooperate with at Geneva lock carryover 191111011 61, so placed relative to the carry-over tooth .60 and the numerals on the associated dial wheel 53, so that when said 9 or 0 thereon is at the sight open ing, said-tooth 60 will lie in proximity to;

- the associated pinionjtll so as'to actuate the latter at the rotation of said dial wheel 53, The carry-over pinion 61f has gear teet gear wheel of the computing wheel 50 of next higher denomination to transmit a one digits rotation theretoat the actuation of said carry-over pinion 61 through the intermediary of said tooth 60.

It will be noted that each computingwheel 50 as herein disclosed, is provided with three of the carry-over teeth (50 since the dial wheel 53 is so proportioned as to make three complete revolutions for every revolution of the associated computing wheel 50 and si' ce there is associated with each computing wheel 50,0nly 0ne carr vover pinion 61. Said carry-over pinlons .61 are normally in mesh with their respective computing wheels 50 and are moved out 01 mesh with said wheels one at a time, at the depression of a numeral key 11, only,the

A pinion 61'associated with thefcomputing the dial wheel 53 of the thousand-dollar order will be rotated a six digit distance in counter-clockwise directinn at the depression. of the 6 numeral key, to'bring the numeral 9 on said dial wheel to the sight opening When said dial wheel passes from 0- to .9, it will cause a carry-over action to take place .on the wheel of next higher denomination, which standing at 0 will be moved to 9 and will, in turn, cause a carry-over action to take place, and so on tothc wheel of highest denomination, so that the three wheels of highest denomination, there being eight shown on the totalizer disclosed herein, would read 999,100.00, which is an erroneous result. It will be noted that the correct difference or overdraft of the computation cited in this example is 900.00 dollars. In order that the tfotalizer may exhibit this correct result, there are provided dial wheels or numeral wheels 70 as many in number as there are dial wheels 53, said dial wheels 70 having fast thereto dial-wheel pinions 71, which mesh with theidlepim' ions 51, so that said dial wheels 70 will be rotated simultaneously with the dial wheels and equal angular distances in a de-.

IlOIDlIltltl'OIL.

The vl egls 70 are provided with numern'ls on their eri her from 0 to 9 m P P y inclusive, and preferably of a diiierent color than the numerals on the dial, wheels 53, or

' otherwise distinguished therefrom, and are so plaeed on the'periphei ofi smd dial metrical progression at the sight opening when said dial wheels rotate in counter-clock wise direction, as seenin Fig. 4, so that the complement of any number on the dial wheel 53, appearing at the sight opening 54,

will always stand at the sight opening 72,-

and vice versa. If, in the example cited, the complemental numbers of the digits in the result are now read at the sight opening 72, there would appear the number 000,899.99, which is still an erroneous result.

As is well known in. algebraic summations of this character, it is necessary to perform a carrying action from the dial Wheel of highest denomination to that of lowest'denomination when said wheel of highest denomination. passes from 9 to 0 or vice versa. For this purpose, there is provided on a, wheel 669 a jacent to and concentric with the computing wheel 50 of highest denomination, a carry-over tooth 73, adapted to engage and rotate a pinion 74 fast on a shaft 75 (Figs. 6 and 7) at'the other end of which is fast a pinion 76 (Figs. 6 and 9),

constantly in mesh with a gear wheel 77 loosely and rotatably mounted on a shaft 7 8 concentric with the computing wheels I and adapted to be rotated a one digit distance when the carry-over tooth 73 actuates the pinion 74 and connected parts simultaneously with the passing of 9 or 0 at the sight opening of the dial wheel of highest denomination. It will be noted that the gear wheels 69 and 77 are two additional gear wheels on shaft 78; they are similar to wheels 50 and arranged one at each side of the series of gear wheels 50.

In order to transmit said one digit distance rotation of the gear wheel 77 to the dial wheel of lowestdenomination, there is provided a ca -over pinion 79 having two identical gears separated by a Geneva pinion 101, one of said gears normally in mesh with said gear wheel and the othen gear.

' normally in mesh with the computingwh eel 50 associated with the dial wheel oflowest denomination. The pinion 79 is so placed with respect and the gear eel 77 as to transmit an equal angular rotation from the latter to the former, which, through the intermediary of its associated pinions 51, 52 and 71,

will transmit a one digit rotation to the dial 7 wheels 53 and 700i lowest denomination.-'

It will now be seen, referring to the hBIG'lHIDBDtlOhBd example of computation said computing wheel 50 that as the dial wheel 53 of highest denomination moves from 0 to 9 at the sight opening 54,-, a carrying action will take place to rotate the dialwheel of lowest denomination a one digit/distance, so that the dial wheel 7 0 of units denomination will be rotated in counter-clockwise direction, to move the numeral 0 thereon to the sight opening instead of the numeral 9, as indicated in the last-mentioned result. When said dial wheel of lowest denomination is thus moved from 9 to 0, a carry-over action takes place therefrom to the wheel of next higher denomination, which, also standinq at 9, will cause a carrying action to talie place therefrom, and

' so on to the dial wheel 70, exhibiting the wheel, it is advantageous disengage the carry-over pinion 79 therefrom so that the Geneva lock 101, 102 will be rendered ineffective to prevent the rotation ofsaid'eorm purpose, the carry-over pinion 79 recent ed on an arm 103 pivoted at. 104, amif'hav ing an extension 105, adapted to reaper-ate with an arm 106, Fig. l,whi;ch is swung forwardly during'the initial part of the down stroke ofany numeralkey "to actup-nting wheel and associated parts. 'For'this ate the arm 103 prior totherotationof the master wheel in said denomination so as to move the carry 'over pinion -79 out of engagement with its associated pertain a similar manner to the disengagement of the car ry-over pinions 61 by the actuation er the arm 106 as illustratedandv described in said patent to Wahl No. 1,148,733..

It will be notedjthat' vnmvnver action tool: place rrom we oral wheel. of hundreds of dollars denomination to the dial wheel of the thousand of dollars denomination during the computation involved in the example cited above. If, however, the nature of the computation should require a carry-over action from the dial wheel of next lower denomination to the dial wheel being actuated by the master wheel in an algebraic summation, said carry-over action will takeplace simultaneously with the ro tation of said dial wheel hy the master wheel at which. time the carryover action, will be ineffective to rotate said dial wheel associated with the master wheel an extra emme tates an amount directly proportional to'the over actions which may take place during the involved computation. It will be noted that no carry-over action can take place after the master wheel has ceased to rotate f and therefore said extra digitsrotation of the actuated wheel requiredv to bring about the correct result cannot take place. Such a condition arises in case it is desired for when the 6 example to subtract 6000.00 dollars when the dial wheels 53 exhibit 5000.00-dollars. It will be evident from the foregoing that numeral key is depressed to actuate the dial wheels of thousands of dollars denomination, that the ,wheel .53 will be rotated incounter-clockwise direction a 6 digits distance to bring the numeral 9 to the sight opening and to cause a carry-over action to take place to the wheel of highest denomination and therefrom through the intermediary of the back gearing 74, 75, 76 and connectedjparts, cause a carry-over action to take place onto the units ofcents denomination and so on to the dialwheel of hundreds of dollars denomination which will pass from 0 to Wand to rotate its associated carry-over pinion 61 which will rotate simultaneously with the rotation of the thousands of dollars computing wheel 50, during the time that the latter is being rotated bythe master wheel of dollars dial wheel 53 will move sothat the numeral 9 thereon will be at the sight adistance directly proportional to the value of'the'numeralkey so that said thousands opening 54. l

If at this time the reading of the dial wheels 70 at the sight opening 72 is noted,

it willibe seen hat' the latter exhibit the complementsof the numerals at the sight I ,opening 54 and will read- 000,000.00 in red sult since the difl'erence in the example cited figures. This, however, is an erroneous reis 1000.00 dollars.

In order to correct this result it is necessary to rotate the dial wheel of-thousands "of dollars denomination one digit distance,

after the master wheel has ceased rotating by the depression of the 6 numeral key, which is readily done by back-spacing the typewriter carriage31 one letter-space distance and depressing the 1 numeral key to rotate the thousands of dollars dial wheel said one digit distance so that the. reading 10i said dialwheels 70 will be 1000.00 dol- 'lars.'which is the correct result The alxweunentioned ineffectual carry action takesv place in any computation 1n which a carry-oreraction onto the dial wheel being actuated by the master wheel is required.

- In order to prevent the confusion of the operative by two sets of numerals namely;

9) pivotally mounted on the respective dial ing .64;

ings 54 and 72 respectively, there is provided shields or shutters 80 and 8]., one for each set of-dial wheels (Figs. 4, 5, 7 8 and wheelshafts and so formed as to obstruct vision through one of the sight openings 54 or 72 at a time.

"In order that'the black or positive numerals may be read through the sight opening 54 there is provided in the shutter 80 a sight opening 82 which when moved to effective position coincides with the sight opening 54 so that the numerals on the dial Wheels 53'may be read therethrough. The shutter 81'is likewise provided with a sight opening 83 adapted to be moved into co1n-- cidcnt position with the sight opening 72 as will presently appear so that the red or negative numerals on the dial wheels 7 0 may in he read therethroughr The sight openings 54 and 82 are normally coincident as seen. in Figs. 4 and 7 so that positive numerals may be read there- 'through and remain coincident during any computation which does notjinvolve an over-' draft, that is, the subtraction of a greater positive number from a lesser positive number. When, however, a computation, is performed beginning with a positive number at the sight opening the result of which is a negative quantity, it is advantageous .to prevent the reading of the positive numerals on the dial wheels 53 and to expose, the negative numerals on the dial wheels 70. For this purpose there is provided, on a disk attached to the wheel 69 which is rotatablyniounted on the shaft .78 adjacent to the computing wheel 50 of highest denomination, a tooth 84 adapted to engage a pinion 85 ivoted at 86 (Fig. 7 to the left side wall 0 the totali zer '34 (Fig. 6) and secured to said pinion85, so

as to rotate therewith is a gearv wheel 87 meshing with an idle pinion. 88 also pivoted to said side wall and in mesh with a'seginent 89 (Fi .7 and 8) formed on the shutter 80 and so placed relativeto the sight opening 82 therein and-to the tooth-84 that when the dial wheel of highwt denominationpasses from 0 to 9 at the sight opening 54, the

tooth 84 will be rotated through the intermediary of the carry-over pinion 61associated with the dial of highest denomination to actuate the gears 85, 87 and 88 to swing the shutter 80 from its normal Fig. .7- position to the Fig. 8 position so as to: move the sight opening'formed therein out of coincidence withthesight opening 54,- thus obstiucting-the view of the positive numerals on said dial wheels through the sight'open- In order that the negative numerals of the dial whee170 may be exposed to view simultaneously with the obstruction from view of the positive numerals there is pro- 1 vided a. link. 90 pivotally mounted on and connecting the shutters 80 and 81 so that when the shutter therein is moved out of coincidence with the sight opening'fda, the sight opening 83 will be moved into coincidence with opening 72 so that the negative numerals -may be read therethrough; said sight openings 82 and 83 being so placed relatively to each other and to the sight openings 54 and 72 that one or the other of said set of dial wheels may be read at a time depending on whether a number-was subtracted from a lesser positive number, or a greater positive number was added toa lesser negative number.

After the shutters 80 and 81 have been movedxo the Fig, 8 position to exhibit negative numbers and a greater number than appeers in the sight opening 72 is added, the

- dial wheel of highest denomination will be merals will appear at the moved during said computationto effect a carry-over action'and to cause the tooth. 8% on the disk attached to the wheel 69 to actuate the gearassociated with the shutter 80 to move the latter and the shutter 81 connected thereto from the'Fig. 8 position to the Fig. .7 position so that black or positive nusight opening 54 and to obstruct the vision of negative or red numerals at the sight opening 72.

The operative may easily ascertain dur-- ing. the actuation of any dial wheel by the -master wheel, when said dialwheel is to'be rotated an additional digits distance by the 1'numeral key in an algebraic computation, by observing the dial wheels of the totalizer. It will be seen that, whenever a dial wheel other than that or" units of cents denomination is actuated said additional digits rotation of the dial wheel being actuated is required, if, before said actuation of said: dial wheel, all the dial wheels at the right thereof stand at O, andfif, subsequentto said actuation, the dialwheel nu- 'm'erals ofdifi'erent, color appear at the sight opening.

When, however, computation is takingfpla'cein units of cents denomination, and if, during computation in said denomination, numerals of a different ,color appear at the sight opening, it is necessary to 1'0-. tate said-units of cents dial wheel an addi-' tionaldigits distance, said rotation in each case being in the same direction as that in which said dial wheels rotated during said and the sight opening 82- the sight throw of the units 97, will prevent overthrow of sa'i In order-to prevent overthrow and'accidental rotation of the back gearing'74, 75, 76 and connected parts, there is provided fast on the shaft 75 and preferably formed in a unit with the gear wheel 7 1, 9, Geneva.

lock member 96 coiiperating with the pa: riphery 69, to hold said Geneva member or wheel 96 against rotation. \Vhen, however, the tooth 73 actuates the associated gear wheel 74, a notch 98, formed in said disk,'is moved into position to permit free movement of a tooth of the Geneva lock member 96 so that the latter may rotate bodily with the pinion'M until said pinion has completed aone digits distance of rotation at which. time the pe-' riphery 97 will again move into engagement with the teeth of the Geneva member 96 to arrest the motion of the gear wheels 74 and connected parts, thus preventing overdial wheel, and hold said part-s against accidental rotation. i

To prevent overthrow and accidental actuation of the shutters 80. and 81, there is pro vided fast on the gear wheel a-Geneva lock member 99, also cobperating with the periphery 97 which has provided thereon a notch 100 similar to the notch 98 and used. for a similar purpose, the parts being so arranged that as the tooth84 completes the actuation of the gear wheel 85, the Geneva member 99 cooperating with the periphery shutters and hold the same against dis lacement. 1

-To prevent over rotation o the units dial wheel after motion has beenxtransmitted thereto through said back gearing; the carry-over pinion 7 9 associated therewith, is provided with a Geneva lock member 101 normally in engagement with a-periphery 97 of a disk attached to the wheel' 102 having a notch 108- cut therein, and so placed relative to said Geneva lock member 101 as to permit. the rotation thereof during" a carryover action; but to. hold said wheel against further rotation in. the same direction at the completion of said carry-over :ic-

tion, and thereby prevent overthrow of the units-of cents dial wheel associated with said "carry-over pinion 7 9 and to tend to-hold said dial wheelngainstaccidental displacement. It should be understood thatwheel 69 is given a single-step movement in onedirection or the other accordingly as the wheel 50 of highest denomination shifts/ thyme;- responding positive dial wheel from f pffto 9 or from. 9 to O to indicate fangs from a' positive to a negative resultyor vice versa. As long as the results of the compu tation are positive, the arts will remain ii the positions shown in P in. 7, and obviousl' leneva member 96 is locked against movement in the positive (cohnter-clockwise) direction, but not against movement in the opposite or negative direction. When, however, the result in the totalizer b omes sitlon shown in Fig. 8, the Geneva mem ber 96 being locked against further movement in the clockwise direction but free to move in the opposite or positive direction. Inasmuch as pinions 74: and 76 are of the same size and the same relation exists between gear-wheels 69 and 77, a single-step movement of wheel 69 in either direction will cause acorrespondin movement of wheel 77. As indicated in ig. 6, the

views in Figs. 7 and!) are obtained by looking in opposite directions, so in Fig.9 the positive rotation about shaft 78 is in the counter-clockwise direction, and the Geneva wheeler member 101 prevents further positive rotation of gear 77, but does not interfere in anyway with-a single-step movement in the opposite direction as the resultin the totalizer changes from positive tonegative. A similar result would be obtained in chang ing from negative to positive results.

Inasmuch as the movement of the elements in the train for carrying over from the computing wheel 50 of highest de-,

nomination'to that of lowest denomination in passing through zero in either direction,

' them are substantially identical with parts to perform the functions herein dis closedi gear to the wheel of lowest denominational is so slight, it would be unnecessary to make them as complete wheels or disks. The present forms are, however, convenient to manufacture, due to the fact that some of used in the totalizer proper, and perform their functi is equally well when in several different positions, thus rendering it easier to assemble the parts and enabling themto be shifted when the contacting parts become worn.

It will be noted by reference to Figs. 4, 7 and 9, that theGeneva lock wheels 96, 9;)

included in the carry-over pinions 61, but that the former may be on a different strilc-' ture than those of the carry-over pinions 61 Variations may be resorted to. withim the tation of said Wheel of lowest denominational order.

2. A totalizer comprising, in combination, a series of wheels representing different denominational orders, and tens-carrying mechanism therefor, including a gear wheel adjacent the Wheel of lowest denominational order, back gearing, including a'Genevalocking device, for transmitting rotative movement from the wheel of highest denominational order to said gear wheel, and a transfer element, including a Geneva-locking device, for imparting rotative movement fromsaid gear wheel to the wheel of lowest denominational order, said transfer element being movable to an. ineffective position,*to permit free inove ent of the numeral wheel of lowest denom i national order during a com utin .o eratibn involvin a directio tation of that wheel, without interfering with the effectiveness of the locking device in the back' gearing.

3. A totalizer comprising in combination, a series of wheels representing different denominational orders, and tens-carrying mechanism therefor, including a gear wheel adjacent the wheel of lowest denominational order, and back gearing includingajfirenevw locking device for effecting a carry through said gear from the wheel of highest denominational order to the wheel of lowest (31 .nominational order,

4, A'totalizer comprising, in combination, a series of wheels representing different denominational orders, tens-carrying mechanism therefor, including a gear adjacent the wheel of highest-denominational order,-a

gear adjacent the wheel of lowest denomina- 'tional order, means, including a Genevalocking device, for transmitting rotative moyement' from the wheel of highest ,dc-

nominational order, through the gear adj scent thereto to the gear adjacent the wheel:

of lowest denominational odergmeans, in

. eluding a Geneva-lockingdevice. for transmitting' motion from said last mentioned scope of the invention, and portions ofrthe 1 gear to the wheel-of lowest denominational improvements may be used' without others. F" Having thus described my invention, I claim: 4 i 1 1. A totalizer comprising, in combination, a series of wheels representing different denominational orders, tenS carrying mechanism therefor,.includnig a gear adjacent the wheel of lowest denominational order, back gearing for effecting a carry from the wheel of highest denominational orderto said gear, s

' adjacent gear wheelgand menas, including a a transfer member, including yt'n automatic lock and overthrow-preventing dev1ce, for transmitting rotative movement from said tioned lock without rendering the first-men 'Wheels, one at-each =side of. said series of wheels, means for effecting a carry from the wheel of highest denominational order to the Geneva-locking device, for transmitting rotative movement from the last-mentioned 1'25 gear wheel through the other to the-whee? of, 1 lowest. denominational order in said seriesl A totalizer comprising, in combination, series of'wheels representing 'difieren't "denomination l orders, andtens e vvingj n mechanism therefor, including two gear.

wheels, one at each side of said series of wheels, and means, including a' Geneva-1001c ing device, I merit from the wheelv of highest denominational order, to and through. said gear wheels, to the wheel of lowest denominational order of said series, the element of said transmitting means between said wheel of lowest denominational order and the ad jaeent gear wheel being movable to an ineffective position to permit said wheel. to be rotated independently'thereof during a com puting operation.

7. A totalizer comprising", in combination, a .series of wheels representing different denominational orders, and tens'carrying mechanism therefor, including two gear wheels, one at each side of said series of wheels, and means, including a Geneva-locking device, for transmitting rotative movement from the wheel of highest denominational order through said gear wheels, to the wheel of lowest denominational order. to effeet a carry from the wheel of highest to that of lowest denominational order.

' 8. A totalizer comprising, in combination..

a series of computing wheels one for each denominational order, and tens-carrying mechanism therefor, including 'two gear wheels, one at each side of said series of computing wheels, means, including a mitting rotative motion from the computing wheel of highest denominational order to one of said gear wheels, and from the other gear wheel tothe computing wheel of lowest denominational. order, to effect a carry' from the computing wheel of highest to. that of lowest denominational order.

9. A totalizercomprising, in combination, a series of computing wheels, one for each denominational order, and tens-carrying mechanism therefor," including two gear wheels, one at each side of said series oi computing wheels, means, including a Genevalock device, for connecting said gear wheels with each. other, means, including a Genevaloclr device for connecting the computing wheel of highest denominational. order with one of said gear wheels, and means. including a. (.lenevadoclr device, for connecting the other gear wheel with the computing wheel of lowest denominational order.

' 10. A totalizer comprising, in combination, a set of computing wheels representing diiierent denominational orders, tenscarrye ing mechanism, including a gear wheel. adjacent the computing wheel of highest de-.

' nommati'onal order, and means. for transmitting rotative motion from said computing.

wheel, to and through said gear wheel, to the computing wheel of lowest denonnnatiouul order, to effect a carry from the computing for transmitting rotative move- Gen- ,evadocmng device, for connecting said gear wheels with each other, and means for transwheel of highest to that of lowest denominational order, means controlledby said comrectmn and for shifting said index and locking it in another' position to designate a number as represented in characters of the other set, whenever said computingwheel of highest denominational order passes through zero in the opposite direction. I

t 11. A totalizer comprising, in combination, a set of computing wheels representing different denominationalv orders, tens-carry ing'mechamsm, including hack gearing for transmitting a carry from the computing wheel of highest denominational order to that of lowest denominational order, means controlled by said computing wheels for representing'numbers in one or the other of two different sets of characters, an index-for indicating from which set of characters the number is to be read, and'mechanism con-- trolled by the computing wheel of highest denominational order for shifting said index and looking it in one position to-desig' mate a number as'represented in characters of one set, whenever said computing wheel of highest denominational order passes through zero in one direction, and for shifting said index and locking it in another posh tion to designate a number as represented in characters of. the other set, whenever said computing wheel of highest denominational order passes throu h zero in the opposite direction, said in cit-operating mechanism comprising means,-including a Geneva-lock ing device, for connecting said index with a part of said back gearing.

12. A totalizeucomprising, in combination,a series of computing wheels represent ing different denominational ordersgn. tenscarrying mechanism thereto comprising a transfer element, including an automatic locking device, for each computing wheel of lower denominational order, for carrying from the computing wheel of that order to the computingwheel of next higher denominatlonal order and forlockmg the same, and back gearing, including automatic locking devices, for carrying from the computing wheel of highest denominational order to the computing wheel of lowest denominational order audior-locking the same, said computing wheels, transfer elements and back gearing thus comprising an endless series of normally locked elements; and means for temporarily rendering ineifectiveth'e part of said mechanism for carrying to and lockin the computing wheel of any denominations, order during a computin operation calling for a direct rotation of t at wheel.

13. A totalizer comprising, in combination, a series oficomputing w eels-representing diflerent denominational orders; and tens-carriin mechanism therefor, includin a gear w ee adjacent the computing whee of lowest denominational -;order,-1'a transfer element, including a Geneva-locking device,

for each computing wheel of lower denominational order, for efl'ecting a tens-carrying operation from that computing wheel to the computin wheel of next higher denominational or er, and for locking he same,.back

earing, including a Genevaockin device,

or transmittin rotative motion mm the computing whee of highest denominational order to said gear wheel, and a transfer 31ement, including a Geneva-locking device for transferring rotative motion from said gear wheel to the computing wheel of lowest denominational order and for locking the same, said computing wheels, transfer elements, and back gearing constituting a closed cycle of normally locked elements, and said transfer elements being movable to ineffective positions so that:the means for 30 Witnesses:

ARTHUR A. Jonson, Jorm F. Rm. 

